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Alexxandr [17]
3 years ago
9

At school, the maximum numer of students that can be in the classroom is 27. If there 20 students signed up for the geometry cla

ss, how many more students can join the class?
Mathematics
1 answer:
pentagon [3]3 years ago
6 0

Answer:

7.

Step-by-step explanation:

Since there is a total of 27 per class, and 20 are already in the class, you can do 27-20= 7 student slots left.

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Are these correct???
velikii [3]

Answer:

yes

Step-by-step explanation:

8 0
3 years ago
Squareroot(y-1) + 3 = y
jek_recluse [69]
Note:xy means x times y and x(y) means the same thing

so
first we get rid of square root then
make the equation equal to zero becaues if
xy=0 then x or/and y=0



squareroot(y-1)+3=y

isolate the squareroot
subtrac 3 from boht sides

squareroot(y-1)=y-3

square both sides (since they are equal, you should be able to square both sides and still make it true)

(squareroot(y-1))^2=(y-3)^2
(y-1)=(y-3)(y-3)
y-1=y^2-6y+9
subtrac y from both sides
-1=y^2-7y+9
add 1 to both sides
0=y^2-7y+10
find what two number multiply to make 10 and add to get -7
the answer is -2 and -5

0=(y-5)(y-2)
therfore
y-5=0
and/or
y-2=0

therefor
y=5 or/and 2 might work
let's try out 2
square root(2-1)+3=2
square root(1)+3=2
1+3=2
false
so 2 doesn't work



let's try 5
squareroot(5-1)+3=5
squareroot(4)+3=5
2+3=5
5=5
true

y=5
7 0
3 years ago
Find the mode median, mean, and range for each data set.<br><br> PLS HELP!!!
Verdich [7]

Answer:

https://www.calculator.net/mean-median-mode-range-calculator.html

Step-by-step explanation:

use this website it helps so much

6 0
2 years ago
Read 2 more answers
A regression model involved 18 independent variables and 200 observations. The critical value of t for testing the significance
Evgen [1.6K]

Answer:

The correct answer to the following question will be Option d (181 degrees of freedom).

Step-by-step explanation:

The given values are:

Regression model,

n = 200

Observations,

p = 18

Now,

⇒  n-p-1

On putting the estimated values, we get

⇒  200-18-1

⇒  181

So that the correct choice will be "181 degrees of freedom".

6 0
3 years ago
Which is the simplified form of r^-7 + s^-12? arrows to the left of -7 and -12 represent exponents,
polet [3.4K]

a^{-b}=\dfrac{1}{a^b}\\\\ r^{-7}+s^{-12}=\dfrac{1}{r^7}+\dfrac{1}{s^{12}}\implies \text{D}

7 0
3 years ago
Read 2 more answers
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